almost all countries have faced the urbanization. in the long run, changes in the production technology have caused migration from rural to urban areas. existing cities have grown and new ones have been created. this is named as “urban development” in the urban literature. cites are created because of economies of scale in production and consumption. there are different cities with different si...

the main object of this paper is to find out the impact of economic and institutional factors on export of services in considering the example of oic countries. panel data method as an econometrics approach is used for estimating models. results show that variables such as gdp per capita, the real exchange rate, foreign direct investment, and information infrastructures have positive and signif...

nowadays biodiesel is receiving more attention as a most important renewable energy for using in diesel engines. inthis research, the application of response surface methodology (rsm) was highlighted to investigate the effects of biodiesel-diesel blends (b0, b20, b50 and b100), engine operating parameters (engine load and  speed) on co2 emission of a diesel engine. the experiments were conducte...

To determine the amount of air pollutants, produced by Iranian automakers, and compare it with old and retrofitted vehicles have become one of the important tools of urban management. The present research uses International Vehicle Emission (IVE) modeling software in order to verify SAIPA Co. fleet emissions, based on Euro 4 emission standard (SAIPA Co. recognized as a superior Iranian brand in...

in this paper, asymmetric effects of exchange rate fluctuation (according to positive and negative shocks) on real output were investigated. in the meantime, the study of behaviour of real output growth in iran’s economy over the period 1338-1386 was done. in specification of the output growth equation, in spite of considering positive and negative shocks of exchange rate, the effects of other ...

Relative Concerns of Rural-to-Urban Migrants in China As their environment changes, migrants constitute an interesting group to study the effect of relative income on subjective well-being. This paper focuses on the huge population of ruralto-urban migrants in China. Using a novel dataset, we find that the well-being of migrants depends on several reference groups: it is negatively affected by ...

The present study aims to explore the causal relationship among economic growth energy consumption and urbanization environmental quality in ASEAN-5 countries. current conduct time series analysis countries using granger casualty model consisting data set from 1980 2018. outcomes of reveals that urban population cause CO2 emission suggested should reduce utilization fossil fuel based induct rob...

UK Households’ Carbon Footprint: A Comparison of the Association between Household Characteristics and Emissions from Home Energy, Transport and Other Goods and Services Does the association between household characteristics and household CO2 emissions differ for different areas such as home energy, transport, indirect and total emissions in the UK? Specific types of households might be more li...